Create 2516-take-k-of-each-character-from-left-and-right.js

Author: everthis

2516-take-k-of-each-character-from-left-and-right.js

@@ -0,0 +1,28 @@
+/**
+ * @param {string} s
+ * @param {number} k
+ * @return {number}
+ */
+const takeCharacters = function(s, k) {
+  const cnt = {a: 0, b: 0, c: 0}
+  const n = s.length
+  for(const ch of s) {
+    cnt[ch]++
+  }
+  if(cnt.a < k || cnt.b < k || cnt.c < k) return -1
+  const limits = { a: cnt.a - k, b: cnt.b - k, c: cnt.c - k }
+  let l = 0, r = 0, res = 0
+  const hash = {a: 0, b: 0, c: 0}
+  for(; r < n; r++) {
+    const cur = s[r]
+    hash[cur]++
+    while(hash[cur] > limits[cur]) {
+      hash[s[l]]--
+      l++
+    }
+    
+    res = Math.max(res, r - l + 1)
+  }
+  
+  return n - res
+};